public class PC {
    CPU cpu;
        HardDisk HD;

        void setCPU(CPU cpu) {
            this.cpu = cpu;
        }

        void setHardDisk(HardDisk HD) {
            this.HD = HD;
        }

        void show() {
            System.out.println("CPU 速度 :" + cpu.getSpeed());
            System.out.println(" 硬盘容量 :" + HD.getAmount());
        }
    }

